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Red Howler Monkey - http://www.yptenc.org.uk/docs/factsheets/animal_facts/red_howler.html
Factsheet on this species from the South American rainforests with a photograph and information on its habits. |
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Family Cebidae - http://www.theprimata.com/factsheets.html
Detailed fact sheets for almost every species of New World monkey. |
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Black Howler Monkeys - http://nationalzoo.si.edu/Animals/SmallMammals/Exhibits/HowlerMonkeys/LoudestAnimal/default.cfm
Information on these monkeys, the loudest animals in the New World. |
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Cebidae Family - http://animaldiversity.ummz.umich.edu/chordata/mammalia/primates/cebidae.html
Characteristics and detailed species accounts of the New World monkeys. |
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Yellow-tailed Woolly Monkey (Lagothrix flavicauda) - http://www.edgeofexistence.org/mammals/species_info.php?id=79
Fact sheet from EDGE, a conservation organization that focuses specifically on threatened species that represent a significant amount of unique evolutionary history. |